Apparatus for use in attaching soles to the lasted uppers of boots and shoes



y 2, 1929- F. H. POCHIN ET 1.719.724

APPARATUS FOR USE IN ATTACHI SOLES TO THE LASTED UPPERS OF BOOTS ANDSHOES Filed June 7, 1927 Patented July 2, 1929.

UNITED STATES PATENT OFFICE.

FRANK HOWARD POCHIN AND HORACE STANLEY PQOHIN, OF LEICESTER, ENGLAND.

APPARATUS FOR USE IN ATTACHING SOLES TO THE LASTED UPPERS OI BOOTS ANDSHOES.

Application filed June 7, 1927, Serial No. 197,088, and in Great BritainJune 8, 1928.

to roughen the marginal portion of the lasted upper and the insole andto apply an adhesive on the roughened surfaces, allowing the adhesive(which usually is a celluloid cement) to dry. The surface of the sole issimilarly treated. When the parts are to be secured together theroughened and coated surfaces are moistened with a solvent of theadhesive and usually more adhesive is applied to said surfaces and thenthe sole is appliedin correct position on the lasted shoe and the twoare pressed together and held until the adhesive has set.

This method of procedure lends itself admirably to the repairing ofboots and shoes (both hereinafter included in the term shoes) and anobject of our invention is the provision of a very simple apparatus forthe use more especially of shoe repairers and which is adapted to dealwith all kinds of work whether for applying a half or a full sole.

Our invention is illustrated diagrammatically in the accompanyingdrawing in whlch Fig. 1 shows the apparatus in side elevation; Fig. 2 isa sectional view showing the main part adapted for half-sole work; Fig.3 is a similar view adapted for whole-sole work; and Fig. 4 is asectional view of a detail.

The numeral 3 indicates an iron container that is to be more or lessfilled with water and has applied to it a sheet of rubber 4 and on thisa leather or strong canvas outer and protecting cover 5, these two beingtightly secured on the rim of the container at the front and sides by ametal frame 6 and bolts or screws such as 7, and at the end by beingcarried down the back 11 of the container and tightly pressed against itby a plate 8 that is secured by studs such as 9 having a projectingcylindrical head 10 and outside this a hexagonal head 13 that issuitable for engagement by a spanner. At the part 12 the container ismade to project upwardly and at this part plate 8 is formed suitably sothat the marginal portions of the sheets 4 and 5 are held in tightengagement against the rim of the container by studs such as 14, havingpreferably cheese heads. The container is provided with a jet 30 andvalve 31 and with a filling funnel 32 and valve 33.

Adapted to be engaged between the plate 8 and the heads 13 of the studs9 and also adapted to be engaged on the cheese-heads 14, is provided asort of cup 16 to receive a rubber block 18 having a gradually taperingtongue 19 projecting forwardly from its upper front edge. Lying on theblock 18 and on the tongue .19 is a leather flap 20 the front end ofwhich is skived so that the flap has its front part of graduallydiminishing thickness and the rear end of the flap is turned over theback of the cup and secured to it by one or more screws 22 and washers23.

There is also provided a pressure plate 25, the front end of which has adepending part 26 on which a pad 27 is secured. The pad may be attachedhingedly as at 28.

At each side of the container 3 is a boss 36 to which bosses a frame 37is hingedly connected by screw bolts, as 35. The frame 87 carries a nut38 to receive a screw 89 that is provided with a hand-wheel 40 so thatby rotating the wheel the screw will press on the pressure plate 25 andthrough it the forepart of the shoe 41 will be pressed down on theleather protected yielding cover 4, 5, and the heel part, when awhole-sole is being applied, on the yielding pad or block 18. Forconvenience of packing for transport, the bolts 35 may be slackened backand the frame 37 laid down level with the container 3. If desired,however, the frame 37 may be secured to the container in a differentmanner, for example by its vertical side members screwing into lugs orsockets projecting from the sides of the container 3. The upper face ofthe pressure plate 25 will preferably be provided with a series ofcavities 44 in one or other of which the lower end of the screw 39 isengaged.

In using the apparatus, and supposing a half-sole is to be applied to ashoe, the workman, having removed the worn sole, will clean the surfaceof the sole portion and will roughen it and apply a suitable adhesivethereto. A viscous solution in the nature of celluloid is, we find, verysuitable. The adhesive is then allowed to dry. The half-sole, alreadycut to approximately the finished shape is similarly treated, that is tosay its inner or shoe contacting surface is roughened and the adhesivethen applied and allowed to become dry.

The drying of the adhesive has the effect that the celluloiod solutioncreeps into the fine interstices of the rough surface of the materialand firmly clings to the fine shreds or fibres produced during theroughing process.'

After this, the shoe and the sole are moistened with the solvent ofcelluloid or other adhesive employed and a further thin coating of theadhesive is applied. The shoe, on a last and with the half-sole placedin proper position thereon at the fore-part, is next placed on theleather protected yielding cover 4, 5, of the water filled container 3;the pressure plate 25 is next placed thereon, the .pad 27 engaging onthe fore-part of the shoe and the rear portion of said platewhich has ashort depending part 29--engaging on the last of the shoe, and then thehand-wheel 40 is rotated to cause the pressure plate to press the shoefirmly down on the yielding surface 4, 5.-

If the newly applied half'sole is thin, it is desirable that itsmarginal portion should be more or less bent upwardly so as to ensurethat this part comes into contact with the slightly rounded marginalportion of the upper at its junction with the insole and to attain thisit is necessary that the sole and shoe should sink into the yieldingleather protected cover 4, 5 or surface on which the sole rests wherebythe yielding cover wraps itself upon the sole and thereby presses itfirmly into engagement with the lasted upper at every position andparticularly around the edges. For this purpose the workman will openthe valve 31 so as to let some of the water within the container 3escape and he will let more or less of the water escape according to thecharacter as aforesaid of the half-sole and of the shoe to which it isbeing applied. For a thick and almost unyielding sole he may find itdesirable to maintain the container completely or nearly filled.

The workman then applies the final pressure by rotating the hand-wheel40 and will allow the shoe to remain under pressure until the adhesivehas set.

The fellow shoe, being presumably of a similar character, may be appliedin position P and the final pressure at once applied without requiringthe workman to effect adjustment by allowing water to escape as alreadydescribed.

If a number of pairs of shoes of the same character are to be dealtwith, the adj ustment of the water content of the container effected tosuit the first shoe will suflice for all the shoes.

If a thick half-sole is to be applied to a shoe after shoes havingthinner half-soles applied, the workman simply turns the apparatus onend and opens the valves 33, 31 and pours water through the funnel 32into the container, the air displaced escaping from the jet 30. He thencloses the valves and replaces the apparatus to its normal position andproceeds as already described.

If a full sole is to be appliedin which case not only the worn sole butthe heel also will be removedthe workman hooks or engages the cup-likemember 16 on to the stud 14 and the stud or cylindrical head 10, thehead (or heads) 13 serving to maintain said cup in position. He thencarefully adjusts the tapering tongue 19 on the pad 4, 5, and alsocarefully adjusts the leather covering flap 20, to ensure that the frontends of the tongue 19 and flap 20 form a gradually diminishing supportthat is to be engaged by the waist of the shoe-as shown in Fig. 3. Hethen proceeds in the manner already described with reference to thehalf-sole.

In either case he will adjust the pressure plate 25 according to theshape and size of the shoe about to be operated on.

It is to be observed that the cupped bracket 16 is provided with adonwardly projecting flange 15 to fit against the plate 8 on the rearend of the container 3, and with an upwardly and forwardly extendingflange 17 to fit against the inclined face of the upwardly extendlngpart 12 of said plate, the flange 17 being slotted to receive the head14 of the stud whereby the plate 12 is secured so as to pinch themarginal portion of the flexible cover 4, 5, against the rim of thecontainer so that when the apparatus is required to be employed forrepairing shoes by attaching whole soles, it is only necessary to dropthe cupped bracket into position, or, when half-soles are to beattached, to lift up and remove said bracket. There is thus no loss oftime in converting the apparatus from one use to the other.

The apparatus is preferably made in duplicate so that the operator afterhaving dealt with one shoe of a pair may at once proceed to dealwith'the fellow shoe.

It will be observed that the tapering tongue 19 and the tapering flap 20thereon ensure a firm support to the sole at the waist of the shoe whenpressure is applied, the yielding cushion 4, 5 adapting itself to thesetapering arts and exerting pressure upon the sole therethrough.

An important practical advantage derivable from the use of our improvedapparatus for repairing shoes by applying a full sole, is that theforepart and waist of the shoe, where the sole and shoe are of iregularcurvilinear shape, are acted upon by an hydraulic pad that instantlyadapts itself to every part of the forepart and waist whatever be theirshape when pressure is applied as stated. whereas at the heel end therelatively rigid block that is provided to resist the pressure of theshoe and sole at that part will practically ensure the production of alevel surface for the reception of the heel.

It will be understood that although our improved apparatus isprincipally intended for use by repairers of shoes, it is also adaptedfor use in making new shoes.

Claims 1. Apparatus for use in attaching soles to boots and shoescomprising a fluid container, a flexible fluid-tight closure for thesaid container through which closure fluid pressure may be applied uponthe under surface and around the edge of the forepart of a sole, and asubstantially rigid art having a resilient surface through whichpressure may be applied upon the waist and heel portion of the so e.

2. Apparatus for use in attaching soles to the lasted uppers of bootsand shoes, comprising a fluid container, a flexible fluid-tight closurefor the said container, upon which closure the lasted upper with thesole in position for attachment is disposed, a cup-like part extendingrearwardly from and rigidly sccured to the said container, a block ofresilient material supported upon the said cup-like art, the said blockbeing of a shape conformlng substantially to the under surface of therear part of the sole in position upon the lasted upper and having atthe front a tapering part which extends above and overlaps the rear partof the said flexible closure, and means for exerting fluid pressure uponthe sole through the said flexible closure whereby the latter wrapsitself upon the sole and thus presses firmly and evenly upon the undersurfaceand around the edge of the sole.

3. Apparatus for use in attaching soles to the lasted uppers of bootsand shoes, comprising a fluid container, a flexible fluid-tight closurefor the said container, upon which closure the lasted upper with thesole in position for attachment is disposed, a cup-like part ex tendingrearwardly from and rigidly secured to the said container a block ofresilient material supported upon the said cup-like part, the said blockbeing of a shape conforming substantially to the under surface of therear part of the sole in position upon the lasted upper and having atthe front a tapering part which extends above the rear part of the saidflexible closure, a protecting cover of leather secured to the rear partof the said cup-like part and extending over the said block of resilientmaterial. and means for exerting fluid pressure upon the sole throughthe said flcxible closure wherebv the latter wraps itself upon the soleand thus presses firmly and evenly upon the under surface and around theedge of the sole.

4. Apparatus for use in attaching soles to the lasted uppers of bootsand shoes, comprising a fluid container, a flexible fluid-tight closurefor the said container upon which closure the lasted upper with the solein position the lasted uppers of boots and shoes, comprising a fluidcontainer having a vertical end face and two side faces inclinedupwardly and forwardly from the end face, a flexible fluid-tight closurefor said container upon which closure the lasted upper with the sole inposition for attachment is disposed, headed studs extending from saidend face of the containcr and a projection extending from theupwardly-inclined face, a detachable cup-like part having a dependingflange to fit said end face, which flange is provided with open-endedslots to receive the headed studs, said cuplike part having aforwardly-extending flange to fit against the forwardlyandupwardlyinclined face of the container, said flange being slotted toreceive said projection, and a resilient pad in said cup-like partconforming to the shape of the under surface of the rear portion of thesole of the shoe.

6. Apparatus for use in attaching soles to the lasted uppers of bootsand shoes, comprising a fluid container having a vertical end face andtwo side faces inclined upwardly and forwardly from the end face, aflexible fluidtight closure for said container upon which closure thelasted upper with the sole in position for attachment is disposed,headed studs extending from said end face of the container and aprojection extending from the upwardly-inclined face, a detachablecup-like part having a depending flange to fit said end face, whichflange is provided with open-ended slots to receive the headed studs,said cuplike part having a forwardly-extending flange to fit against theforwardlyand upwardlyinclined face of the container, said flange beingslotted to receive said projection, and a resilient pad in said cup-likepart conforming to the shape of the under surface of the rear portion ofthe sole of the shoe, said pad having a forwardly-projecting lip tooverlie the rear portion of the flexible closure.

FRANK HOWARD POCHIN. HORACE STANLEY POCHIN.

